Rheological properties of ionomer based on propylene terpolymer

Ionomers based on terpolymerization of the propylene/1 -hexane/10-undecenoi c acid system were prepared, and their rheological properties were studied. The complex viscosity increased in the order poly(propylene-co-1-hexene) < homopolypropylene < terpolymer with acid less than terpolymer with zinc sa lt, and the crossover modulus of terpolymers with salt or acid were shifted to a lower frequency compared with that of homopolymer. In the G'-G " plot s, terpolymers with salt and acid showed some deviation. So, time-temperatu re superposition was not applicable to those samples. The flow activation e nergies showed the following order of value: homopolymer < terpolymer with acid < terpolymer with salt.